This is neat, and as someone who wants to eventually build a layout in his basement I'm glad there's continued development of these types of projects, but I'm not sure I see how this is going to be simpler than DCC. The complexity of programming DCC is called out, but reprogramming and designing an "infinitely variable" Arduino based solution is almost certainly going to be way more complex

Maybe that complexity is the selling point, in that you may be able to do things DCC can't, but approaching this as easier than DCC seems off base